Transformer module, power reception device and power transmission device

Abstract

A circuit module equipped with a primary coil of a step-down transformer formed by primary coils of a plurality of transformer elements connected in series with each other and a secondary coil formed by secondary coils of the transformer elements connected in series with each other, includes a printed substrate on which the transformer elements are mounted in a lengthwise direction, a connection terminal coupled to a first end of the primary coil of the step-down transformer and connection terminals coupled to the secondary coil of the step-down transformer, the connection terminals are positioned such that the transformer elements are interposed therebetween. As a result, provided are a transformer module that reduces the effect of a high-voltage portion on a low-voltage portion by securing a distance between the high-voltage portion and the low-voltage portion, and a power reception device and a power transmission device equipped with the transformer module.

The invention claimed is: 
     
       1. A transformer module comprising:
 a substrate; 
 a primary winding group mounted on the substrate and forming primary windings of a plurality of transformers coupled that are in series or parallel with each other; 
 a secondary winding group mounted on the substrate and forming secondary windings of the plurality of transformers that are coupled in series or parallel with each other; 
 a first input terminal disposed on the substrate and coupled to a first end of the primary winding group; 
 a second input terminal disposed on the substrate and coupled to a second end of the primary winding group; and 
 a first output terminal and a second output terminal disposed on the substrate and coupled to a first end and a second end of the secondary winding group, respectively, 
 wherein the plurality of transformers are interposed on the substrate between the first input terminal and the first and second output terminals, and 
 wherein the second input terminal is disposed on the substrate such that the plurality of transformers are interposed between the second input terminal and the first input terminal. 
 
     
     
       2. A transformer module comprising:
 a substrate; 
 a primary winding group mounted on the substrate and forming primary windings of a plurality of transformers coupled that are in series or parallel with each other; 
 a secondary winding group mounted on the substrate and forming secondary windings of the plurality of transformers that are coupled in series or parallel with each other; 
 a first input terminal disposed on the substrate and coupled to a first end of the primary winding group; 
 a second input terminal disposed on the substrate and coupled to a second end of the primary winding group; and 
 a first output terminal and a second output terminal disposed on the substrate and coupled to a first end and a second end of the secondary winding group, respectively, 
 wherein the plurality of transformers are interposed on the substrate between the first input terminal and the first and second output terminals, and 
 wherein the second input terminal is disposed on the substrate such that the plurality of transformers are interposed between the second input terminal and the first and second output terminals. 
 
     
     
       3. The transformer module according to  claim 1 , wherein the plurality of transformers are arranged and mounted on the substrate in m rows and n columns, where m and n are each integers of at least 2. 
     
     
       4. The transformer module according to  claim 3 , wherein there is a maximum distance between the 1st input terminal and the 1st and second output terminals. 
     
     
       5. The transformer module according to any  claim 1 , further comprising:
 a rectifying/smoothing circuit disposed on the substrate and coupled to the first and second output terminals; and 
 a load supplying circuit disposed on the substrate and configured to supply an output voltage/current that has been rectified and smoothed by the rectifying/smoothing circuit to a load circuit, 
 wherein the rectifying/smoothing circuit and the load supplying circuit are disposed provided at positions on the substrate such that the plurality of transformers and the first and second output terminals are interposed between the first input terminal and at least one of the rectifying/smoothing circuit and the load circuit. 
 
     
     
       6. The transformer module according to  claim 1 ,
 wherein the plurality of transformers are arranged in a first direction on the substrate between the first input terminal and the first and second output terminals, and 
 wherein each of the plurality of transformers has a winding axis that is aligned with the first direction. 
 
     
     
       7. The transformer module according to  claim 1 ,
 wherein the plurality of transformers are arranged in a first direction on the substrate between the first input terminal and the first and second output terminals, and 
 wherein each of the plurality of transformers has a winding axis that is orthogonal to the first direction. 
 
     
     
       8. The transformer module according to  claim 1 , wherein the plurality of transformers includes a first transformer with terminals of the primary winding being a same polarity as terminals of the secondary winding, and a second transformer with terminals of the primary winding being an opposite polarity as terminals of the secondary winding. 
     
     
       9. A transformer module comprising:
 a substrate; 
 a primary winding group mounted on the substrate and forming primary windings of a plurality of transformers that are coupled in series or parallel with each other; 
 a secondary winding group mounted on the substrate and forming secondary windings of the plurality of transformers that are coupled in series or parallel with each other; 
 a first input terminal and a second input terminal disposed on the substrate and coupled to a first end and a second end of the primary winding group, respectively; and 
 a first output terminal and a second output terminal disposed on the substrate and coupled to a first end and a second end of the secondary winding group, respectively, 
 wherein the plurality of transformers are interposed on the substrate between the first and second input terminals and the first output terminal and between the first output terminal and the second output terminal. 
 
     
     
       10. The transformer module according to  claim 9 ,
 wherein the plurality of transformers are arranged in a first direction on the substrate between the first and second input terminals and the first output terminal, and 
 wherein each of the plurality of transformers has a winding axis that is aligned with the first direction. 
 
     
     
       11. The transformer module according to  claim 9 ,
 wherein the plurality of transformers are arranged in a first direction on the substrate between the first and second input terminals and the first output terminal, and 
 wherein each of the plurality of transformers has a winding axis that is orthogonal to the first direction. 
 
     
     
       12. The transformer module according to  claim 9 , wherein the plurality of transformers includes a first transformer with terminals of the primary winding being a same polarity as terminals of the secondary winding, and a second transformer with terminals of the primary winding being an opposite polarity as terminals of the secondary winding.